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1Published 1982Subjects: “...Bogomiles Bulgaria Congresses....”
Conference Proceeding Book -
2Published 1982“...Bulgaria Study and teaching Congresses....”
Conference Proceeding Book -
3Published 1982“...Bulgaria Civilization Congresses....”
Conference Proceeding Book -
4Published 1982“...Bulgaria Civilization Congresses....”
Conference Proceeding Book -
5Published 1983“...Bulgaria Civilization Congresses....”
Conference Proceeding Book -
6Published 1982“...Bulgaria Study and teaching (Higher) Congresses....”
Conference Proceeding Book